Table 1 Baseline characteristics of patients with EGC
Total | Group A | Group B | P value | |
|---|---|---|---|---|
Patient number | 429 | 268 | 161 | |
Age (mean ± SD), years | 55.94 ± 9.50 | 55.90 ± 9.49 | 56.01 ± 9.53 | 0.908 |
≥60 | 157 (36.6%) | 99 (36.9%) | 58 (36.0%) | 0.849 |
< 60 | 272 (63.4%) | 169 (63.1%) | 103 (64.0%) | |
Gender | 0.667 | |||
Male | 272 (63.4%) | 172 (64.2%) | 100 (62.1%) | |
Female | 157 (36.6%) | 96 (35.8%) | 61 (38.9%) | |
Tumor location | 0.990 | |||
Upper | 58 (13.6%) | 36 (13.4%) | 22 (13.7%) | |
Middle | 140 (32.6%) | 87 (32.5%) | 53 (32.9%) | |
Lower | 231 (53.8%) | 145 (54.1%) | 86 (53.4%) | |
Tumor size, mean ± SD, mm | 24.5 ± 10.6 | 23.9 ± 10.5 | 25.3 ± 10.7 | 0.176 |
≥20 | 267 (62.2%) | 159 (59.3%) | 108 (67.1%) | 0.109 |
< 20 | 162 (37.8%) | 109 (40.7%) | 53 (32.9%) | |
Depth of invasion | 0.525 | |||
Mucosa | 219 (51.0%) | 140 (52.2%) | 79 (49.1%) | |
Submucosa | 210 (49.0%) | 128 (47.8%) | 82 (50.9%) | |
Macroscopic type | 0.510 | |||
Depressed | 229 (53.4%) | 147 (54.9%) | 82 (50.9%) | |
Flat | 136 (31.7%) | 85 (31.7%) | 51 (31.7%) | |
Elevate | 64 (14.9%) | 36 (13.4%) | 28 (17.4%) | |
Node metastasis | 0.924 | |||
Positive | 71 (16.6%) | 44 (16.4%) | 27 (16.8%) | |
Negative | 388 (83.4%) | 224 (83.6%) | 134 (83.2%) | |
Histology | 0.404 | |||
Undifferentiated type | 218 (50.8%) | 132 (49.3%) | 86 (53.4%) | |
Differentiated type | 211 (49.2%) | 136 (50.7%) | 75 (46.6%) |